Nokia and British scientists spray liquid zinc oxide on plastic sheet and heat them on a kind of chemical mixture; zinc oxide nanorod will be generated on the surface of the sheet at 90℃; voltage will be produced by placing it between two electrical contact sheet of aluminum foil.

The prototype with this electricity collecting device is close to Nokia Lumia 925 in size and is sufficent to charge the phone with 5V current generated from noise in daily life. This technology, once developed, can not only solve the electricity consumption problem of mobile devices such as cell phone but also effectively reduce the battery pollution.

Actually, many manufacturers have considered to generate electricity with sound. Orange once proposed a similar concept: Sound Charge Shirt. An A4-sized pressure-electricity converting film in this T-shirt can absord and convert sound wave into storable electricity. When the surrounding sound level exceeds 80 dB, the T-shirt can generate the electricity about 6W.

From: 36Kr
Translated by Steve, CCJK Technologies Co.,Ltd.
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